Figure 11
UV/vis absorption spectra of 5 (6.0 × 10−5 mol/L) in CH3CN at 25 °C. The concentrations of H2PO4 − for curves 1–11 (from bottom to top) are: 0, 0.6, 1.2, 1.8, 2.4, 3.0, 3.6, 4.2, 4.8, 5.4, 6.0 × 10−5 mol/L. Inset: The Job’s plot for 5·H2PO4 − complex in CH3CN at 280 nm.
